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The oxygen cycle describes the movement of oxygen within its three main reservoirs.
An earthquake is one of the most devastating natural phenomena.
Short-lived but extremely powerful tornadoes can cause a great deal of damage.
In the past, a number of geologists tried to explain why the outlines of continents seem to fit...
Soil is the loose, uppermost, fertile layer of the Earth’s crust.
Seas and oceans cover almost three-quarters of the Earth’s surface. 97.5% of the total...
We can come across the remains of the Variscan and Caledonian mountain systems almost anywhere...
A geyser is a spring characterised by intermittent discharge of water and steam.